Tatiana Mamonova
NRU HSE
19 october 2018
Polefon, MSU
In 1964, Lisker and Abramson:
“the timing of glottal pulsing relative to supraglottal articulation would account for the great majority of homorganic consonantal distinctions traditionally said to depend on voicing, aspiration,”tensity“, and the like” (Abramson and Whalen 2017).
Abramson & Whalen (2017) argue that VOT is a cross-linguistically useful (and simple) measure, even if not a universal discriminator.
Considering a sample of languages, (Ladefoged & Cho 1999) show that VOT measurements do not directly depend on sound types and oppositions. Below is the sub-sample that has ejectives:
In our study, we want to consider how Abaza consonants perform in terms of temporal structuring (VOT etc.), comparing voiceless and ejective stops.
POA: labial, dental, velar, uvular
Manner: stops
Phonation type: voiceless, ejective
Previous vowel duration (v1)
Closure duration (cd)
Voice Onset time (vot)
Following vowel duration (v2)
Examples of annotation in Praat
Words with two syllables
Phonectic context aCa
Stressed position not controlled
Eleciting words by a Russian translation
Three repetition followed by a carrier phrase
Four female speakers
Data were annotated in Praat
Extracted with Praat script
Analysed and visualized with R by G. Moroz
## Generalized linear mixed model fit by maximum likelihood (Laplace
## Approximation) [glmerMod]
## Family: binomial ( logit )
## Formula: phonation ~ cd + vot + poa + (1 | speaker)
## Data: df_for_glm
## Control:
## glmerControl(optimizer = "bobyqa", optCtrl = list(maxfun = 1e+06))
##
## AIC BIC logLik deviance df.resid
## 536.3 567.8 -261.2 522.3 655
##
## Scaled residuals:
## Min 1Q Median 3Q Max
## -20.5505 -0.2826 0.2621 0.4298 4.3817
##
## Random effects:
## Groups Name Variance Std.Dev.
## speaker (Intercept) 0.7428 0.8619
## Number of obs: 662, groups: speaker, 4
##
## Fixed effects:
## Estimate Std. Error z value Pr(>|z|)
## (Intercept) 0.9655 0.4765 2.026 0.04275 *
## cd 0.7363 0.1607 4.580 4.64e-06 ***
## vot 1.5789 0.1906 8.283 < 2e-16 ***
## poadental 1.5357 0.2677 5.736 9.67e-09 ***
## poavelar_pal -2.5637 0.4105 -6.245 4.24e-10 ***
## poauvular -1.1142 0.3803 -2.930 0.00339 **
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## Correlation of Fixed Effects:
## (Intr) cd vot podntl pvlr_p
## cd -0.030
## vot 0.140 0.083
## poadental -0.274 0.081 0.092
## poavelar_pl -0.250 0.250 -0.365 0.316
## poauvular -0.265 0.133 -0.420 0.331 0.429
Tatiana Mamonova (t_mamonovaa@outlook.com)